PC Tsw2020 & Csx Heavy Haul

I recently downloaded TSW2020 from Microsoft Gamepass for PC and found that CSX Heavy Haul was not included.

Will the CSX Heavy Haul be available for those of us on gamepass or will I need to purchase TSW2020 and CSX Heavy Haul Separately (IE To get the update I needed CSX Heavy Haul to begin with).

 

Unfortunately, Heavy Haul is only available to the Steam version of TSW. The one on the Gamepass will have the same contents included in the Xbox version (GWE/NTP/LIRR/MSB).

 

Thanks.
Buying two versions just for one addon is not very economical, but it looks like it will be necessary.